Bag-bundling machine



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l1 Sheets-She6t 2 13, 1925 llSheets-Sheet 5 April 30, 1929 J. DUVALL ET AL BAG BUNDLING MACHI NE Filed Oct.

April 30, 1929 J; DUVALL ET AL BAG -BUNDL 1NG MACHINE Filed Odt. 15, 1925 IISheets-Sheet 4 N; v Mm N April 30, 1929.

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J. DUVALL ETAL BAG BUNDLING MACHINE April 30, 1929.

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April 30, 1929- .1; DUVALL ET AL BAG BUNDLING MACHINE l Sheets-Sheet 9 Filed oct. 13, 1925 April 30, 1929. J. DUVALL ET AL 1,711,228

' BAG BUNDLING MACHINE Filed, Oct. 15,1925 llsheets-sheet 10' April 30, 1929. J. DUVALL ET AL 1,711,228

BAG BUNDLING MACHINE Filed Oct. 13, 1925 l1Sheets-Sheet 11 zzww be readily adjusted Patented Apr. 1929..

UNITED STATES PATENT or-rice.

JAMES DUVALL AND GLEN W. SMITH, OF CAMAS, WASHINGTON.

' BAG-BUNDLING MACHINE.

Application flled' October 13, 1925. Serial No. 62,246.

Our invention relates to machlnes forwrap" ing bundles, for instance, paperbags, in which the lateral ends of the sheet of wrap ping paper are folded about said package and pasted together. Bundles of paper bags to be wrapped are arranged in bunches containing approximately one hundred bags in each and six of saidbunches are stacked one upon the other. The common manner of wrapping said bundles heretofore was to fold the lateral ends of the sheet of wrapping paper about said bundle and then-to tie said bundle with a length of string. Bundles tied in this manner, however, are not only rather bumpy but also tend to be compressed unevenly throughout their length so as not to be of uniform height. The object of our invention is to provide an improved, simple and efficient machine by which bags stacked in the form of a bundle containing an equal number of units, may be successively placed on sheets of wrapping paper or other similar serviceable material and continuously moved through the machine on said sheets, themachine operating to .ap-

ply paste to one end of the wrapping sheet .and then lapping the lateral ends about said bundle and causing said pasted portion to set by the application of heat. The bundles are compressed before beingqwrapped and said compression is maintained during the pasting operation and continues until after the ends of the wrapping sheet are firmly pasted together so as to prevent the wrapping sheet from being subjected. to any strain which would tend to displaceits overlapped ends. By passing bundles of bags through a machine of this character successively, bundles of unifor he ightare produced andbecause the ends df along their entire length, the-bundles are maintained in an equally compressed condition and thus said bundles are regular in out-" line and pack very compactly when shipped.

A further object of our invention is to arrange our improved to wrap bundles of different sized, bags. All of the relatively adjustable devices in our, machine are connected together so that the adjusting of one part thereof will cause a corresponding ad ustinent of the other adjustable portions. That is; although the various adjustable portions .of our machine are located some distance from each other,

the wrapping sheet are pasted" machine so that it can they are connected by membersarranged so that one of saidadjustable portions is moved to accommodate one size bag to be wrapped, said adjustment will correspondingly move the other portion accordingly. I

A further object of our invention is to provide an automatic. wrapping machine of this character-in .which the bundles of bags and the sheets of wrapping paper are fed continuously upon a longitudinally arran ed carrier or conveyor, which extends t e fulllength of the wrapping machine and thus said bundles and said wrapping sheets are carried by a single carrier or conveyor, and thus the tendency of said bundles or sheets to be displaced is minimized.

A further object of our invention is to provide shearin devices which are adapted to divide a contlnuous strip of wrapping material into sheets of the correct len th, said "sheets being connected by easily bro en portions of said strip. Sa1d portions serve to maintain the sheets in their correct-relationship to each other, but permit them to be easily broken when the wrapped packages are discharged from the machine. Said connectmg portions of the wrapping sheet are arranged so that they always will lie adjacent the carrier or conveyor and thus said sheets may be left connected-until the packages are discharged, fully wrapped. The shearing devices are also synchronized relatively to the speed of the-conveyor for the bundles and thus the length of said sheets of wrapping paper can be varied by changing the relative timing of said shearing devices.

A further object of our invention is to probundles to be wrapped so that said bundles not only will be correctly positionedupon said conveyor but also will be arranged upon the sheet of wrapping material so that the previously formed folds will extend along the adjacent edges of the bundle tov be wrapped. One of said guide elements preferably consists of a movable belt synchronizedf relatively to the conveyor and'inclined towards the other of said guides so that said movable guide belt will co-operate with said conveyor to feed said bundle through said machine. for a short distance.

A further object of our invention is to provide compressing mechanism for the bundle which co-operates with the conveying mechlatter the movement of said bundle through the machine. Said compressing mechanism is ar-' ranged to make an oblique angle with the plane of said conveyor or carrier, and the discharge end of said compressing devices are arranged so that the space between said end and said conveyor is less than the normal.

height of said bundle to be wrapped and thus said bundle is compressed into a smaller bundle than it normally assumes while itis being wrapped. Said compressing action thus relieves the wrapping sheet of any strain and thus the pasted ends of said sheet will not tend to be displaced while the paste isdrying, and when the pressure is released, upon the bundle being discharged from said machine, the resultant expansion will tend to tension the wrapping sheet and produce a relatively solid bundle.

' A further object of our invention is to provide folding mechanism for wrapping the lateral ends of said. wrapping sheet about the bundle, said folding mechanism serving first to lift the flat sheet of wrapping paper upon which the bundle is carried to parallel vertical positions relatively to the horizontal conveyor so as to extend upwardly along the sides of the bundle. Successive folding devices then fold the ends of said upstanding portions inwardly, one over the other, so as to cause them tobeoverlapped and thus bring the pasted end over the other of said lateral ends. Said folding mechanism comprises a bridge-like portion arranged directly above the bundle. Said latter inturned fold is made over said bridge-like portion, said bridge-like portion tending to' compress the bundle against'the conveyor and the wrapper thus" is left relatively free, that is, independent of the compression of the bundle. Thus, during the time-that said inturned overlapped fold is made the sheet of wrapping material is subjected to no tension by the compression of the bundle and thus the overlapped ends do not tend to be'pulled apart.

To this end our invention comprises the certain mechanism, and combinations of de vices hereinafter fully described with referenceto-the'jiccompanying drawings. In the Fig. 1, Sheet 1',jis' a diagrammatic view of the belt-like conveyor, the sheet of Wrapping material and a number of bundles of bags being Wrapped, said view diagrammatically showing the progressive operations of map ing said bundles as they are passed by said Belt-like conveyor through our machine;

' Figs. 1 and 1", Sheet 1, are larger scaled diagrammatic views showing a sheet ofwrap in a er the acka e to be wrap ed lheFeiIi a i d the cr ases ormarking the lcation of the folds to be made in said sheet of wrapping material; said figures diagrammatically illustrate the manner in which the creasing rolls are adjusted to accommodate the arrow 8 in Fig. 4:;

muses difierent sized packages of bundles of bags;

Fig. 1, Sheet 1, is a fragmentary diagrammatic view of a portion of the belt-like conveyor and a sheet ofwrapping material with a bag bundle carried thereon, said figure is diagrammatic, showing the set of folding devices adapted to form the inturned fold about said )ackage over the bridge-like portion, a portion of said bridge-like portion also being shown;

Figs. 2, Sheet 2, and 2, Sheet 3, are complementary and represent-a plan view of our machine;

Figs. 2, Sheet 2, and 2, Sheet 3, are also complementary and are diagrammatic representations of the operations of our improved machine, as shown in Figs. 2 and 2, the diagrammatic representation of a particular operation being invertical alinement with the portions of the machine shown in Figs. '2 and 2* which perform said opera tion;

Figs. 3, Sheet 4, and 3*, Sheet 5, are also complementary and represent a side elevation of our machine on a slightly larger scale than the plan view, portions of the machine being shown as broken away in these figures to disclose details of construction; and the compressing elements which comprise the after end of our machine, are shown as foreshortened;

Figs. 4, Sheet 8, 4*, Sheet 7, 4: Sheet8, and-- 4, Sheet 9, are also .complementary views taken on a still larger scale representing a longitudinal section through our machine, said figures also show bundles and sheets of wrapping material Fig. 5, Sheet 6, is anend elevation of our improved machine taken in direction of the, arrow5in Fig.4;

Fig. 6, Sheet 6, is a fragmentary per-spec .tive view of one of said creaser elements and a portion of the adjusting devices therefor;

Fig. 7, Sheet 7, is a fragmentary perspective view of the pivoted supporting arm which carries one portion of the upper compression belt elements;

Fig. 8, Sheet 9, is an end elevation of our improved machine taken in the direction of Fig. 9, Sheet 10, is a transverse section through our machine taken onthe line 9-9 of Fig. 4";

'Fig. 10, Sheet 10, is a transverse section through our machine taken substantially on the line 1010 of Fig.4;

Fig. 11, Sheet 11, is a diagrammatic fragmentary View of the connections between the relatively adjustable operative device s, said connections being adapted to maintain the relative positions of said operating'devices constant so that an adj ustment of one operative device will cause a corresponding adj ustment of the others; and. ,r

Fig. 12,-Sheet 5, is'a fragmentary perspec-- passed on to the bed 1 is interposed upon ings.

45 a roller 3", mounted transversely 60 ping paper.

. 4" to provide for the proper spacing 'o 60 adjustably spaced c5 4", 4" and 4", respectively,

parts as they occur during the operation of i 10 wrapping bundles of bags.

- Our improved bag bundling machine coma prises a frame 1 upon which all of the operating mechanism istcarried. A sheet b of wrapping material, preferably paper, is

p of said frame 1, from the left as viewed in Figs. 1, 1, 2, 2", 3, 3, 4:, 4:", 4:" and 4:". Said supply of paper is carried by a parent roll I) and passes over a guide roll 6 on to the initial end of the machine. Said 20 parent roll of paper I) is preferably mounted on a rotatable mandrel carried upon the initial end of the machine, said mandrel, however, not being shown in the drawings because usually a printing or labeling device the initial ,emd ofv the machine as shown, and between the parent roll and the creasers. Said printing or labeling mechanism forms no part of our invention and therefore is elimmated from the drawi Adjustable creasing devices.

In passing onto the bed our our machine the sheet of wrapping material 1) moves as a continuous strip and passes under a plurality of relatively adjustable creasing rolls 3", 3", '3" and 3", Figs. 2, 4', 5 and 6.

The' creaser rolls-3", 3", 3 and 3" are rotatably mounted in arms 3","3 3 and 3 40 which are fixed to the channel like members 3*,- 3 and 3, which are movable on a transverse bar 3 and through which parallel transverse-bars 4", 4" and 4" are passed.

- The said creaser rolls normally bear against of the machine and the continuouslsheet of wrapping paper passes between the creaser rolls and the under roller 3", whereby longitudinal continuous creases are formedin the wrap- The channel-like members-3", 3*, 3 and 3 are relatively adjustable on the rods 4", 413%].

t e creases to conform with the folds about vari ous sizes of bag bundles which our machine is adapted to operate on. I J

The channel-like member 3 is fixed to' the bar 3 as the position of the crease so formed is constant, the other creasers belng the rods 4", 4",4", which are longitudinally movable in the member 3. r

. The members 3", 3 and 3 are fixed by any suitable means, such as a set screw,to the rods and the rods .ing member.

vunder a pulley 5" relatively the'refrom on i themselves are longitudinally movable and are connected at-each end to flexible cables 5", 5", and 5", respectively. 7

The cables 5" and 5" connected to the right hand ends of the rods 4" and 4" pass over pulleys f and f and are provided on their ends with counter-weights 6" and 6" and the cables 5" and 5" connected to the other ends of said rods 4" and 4" pass over pulleys g and downwardly and under pulleys 8" and 8", fixed to the floor beneaththe machine, and thence upwardly overxtwo pulleys 8 fixed to the frame 1, and then around the pulleys 101 and I 101" respectively.. The cable 5" is fixed to the opposite side of the frame 1. The cable 5" passes upwardly under a pulley 8-fixed on the frame 1 and to the frame section which carries the upper conveyor belt and supporting mechanism which constiututes alsothe upper compress- The cables 5" and 5" then, are passed around horizontal companion pulleys 101 mounted on the lower end, of an upright shaft 94- of the guiding mechanism, hereinafter described, and the cable 5" is then fixed to the frame 1 of the machine.

The, cable 5" is passed under a pulley 8 fixed to the frame section 1 and upwardly to the upper frame section 7 and fastened thereto.

a The cable 5" connected to the left hand end of the rod 4" passes over one of theloose companion pulleys g and to a counter-weight 6" connected on its end.

The cable 5" connected to the right hand end of the rod 4" passes over another of the companion pulleysf and downwardly and fixed to the floor beneath the machine and then under a pulley 5" also fixed to the floor and upwardly to the frame 0 section 7, to which it-is fastened.

Thus by this constructioh as the upper frame section 7 which is vertically adjustbe, moved along the support 3 and the creases so formed will be spaced properly to conform to the folds along the top and bottom edges of the bag bundles. p I A flexible cable 9 is fixed to any convenient point on the pasting device, hereinafter "described, and leads transversely of the machine over a pulley 9" and downwardly and under a pulley 9and-under a.pulley 9 and upwardlyand over a pulley 9" fixed on the frame section 7, and is then connected to an arm 9% which is pivotally connected atv its ends respectively to the cross member97j and to an'arm 9", pivotally connected to the cross member will be moved laterally one-half the distance of the movement of the cross member 94.

Thus the pasting device is adjustably moved laterally with the movement of the 94" so that the pasting device. 7

frame section 7 and in unison with the ad- W apper cutting devices.

I a The sheet of wrapping material after pass ing under the creasers passes between two palrs of driven, transverse drawlng rolls 1010"- and 1111 which are spaced apart and in said space a plate 12 is arranged, pro vided with a narrow longitudinal aperture 12 therein through which the sheet of'wrappingmaterial 5 passes and said aperture'is only slightly wider than the thickness of the Wrapping material I). As shown in- Fig. 4, a guide 12 is arranged on the lower edge of the aperture 12* and the rearward upper edge of the aperture 12 is rounded as at 12. A transversecut-ofi' knife 13 is mounted on arms 13', which are pivoted at their ends on a transverse rod 14. The cut-off knife 13 is provided with serrated edges 13" and with spaced notches 13% which are relatively narrow and of sufficient depth so'that the portion of the Wrapping material adjacent these notches will be uncut, and thus the section of the wrapping. material so cut will remain connected, but easily separated. The cut-01f knife 13 is provided with a lon- I gitudinal shoulder 13 which normally bears against a transversely arranged stop rod 15 by 'the action of compression springs 16 I which are mounted over rods 16 which are hinged to the arms 13 as at 16 and at their lower ends 16 they are pivotally mounted on a rod 11 fixed to the frame 1. The rods 16 are'extensible and the springs-16 thus normally hold the knife 13 against the stop rod 15. The portion of said wrapping sheet thus intersected, is held taut by the sets of 1 drawing rolls 10, 10, and 11, 11 and thus when said blade passes'through said sheet, the severance of said sheet is aided by the tautness of the wrapping sheet.

It is desirable that the severed sheets of wrapping material be connected because said connecting portions tend to hold the sheets in correct\relative position to prevent them,

being-displaced from the conveyor. The

connecting portions 6 in said sh et between the'severed sections are arrange closely to thetwo middle folds, as shown in Fig. 1, and thus said connected portions do not interfere withthe folding of said sheets around the bundle. When said bundle is discharged from the end of the machine, said portion can be easily broken by the attendant so as to permit theseparate, wrapped bundles to be stacked one on top of the other. a rotating spiral cam 17 is arranged so that the outstandingflange 17 thereon periodically engages on its inner face a roller 13 carried by one of the arms 13' of the cutoff knife 13, and said spiral cam in rotating moves the knife 13 downwardly so that the shoulder 13 is movedaway from the stop rod 15. In moving the arms 13 of the cut-off knife 13, the cam 17 compresses the spring 16- still further and thus when said roller 13 passes off the end 17". of the cam, said knife 13 is driven upwardly by the compression spring with great velocity, and is driven through the sheet of wrapping material I) thus severing the same which. is securely held against the operation of the blade 13 by the plate 12 and the rollers 10 and 10, and 11 and 1.1. Said spiral cam 17 is carried by a rotatable driven shaft 18 which extends transversely of the frame of the machine and extendsint a casing 18 which encloses a speedchange device 25, the driving gears in said speed change device being connected to the driving mechanism of the machine.

Any suitable speed changing device may be used and therefore will not be described in detail. By changing the speed of rotation of said shaft 18 the timing of the cutting iritervals of said cut-off knife will correspondingly be changed and, inasmuch as the sheetpping material passes continuously of wra over the bed of the frame 1, the length of the wrapping material between the cuts will thus be controlled correspondingly. Experience has proven that when our machine is used for wrapping paper bags the different.

sized bags "require wrapping sheets which vary in lengths from 8" to 15 and thus we provide a speed change device which has eight adjustments so that the timing of the knife can be regulatedso as to cut sheets of wrapping material accordingly, ment producing but 1" difference in length of wrapper.

Bundle positioning devices.-

each adj uste' machine and which terminates at a point adjacent the edge of the convcying'belt.- We provide a longitudinally arranged vertical partition 21: which lies along the other side of said belt and thus the edge 20 of said plateand said vertical partition 21. forms a groove in which the bundles to be wrapped may be placed,'said groove being in longitudinal alinement with'said belt.

An operator who stands beside'the machine places the bundles on the plate 20 and pushes them onto the continuous wrapper ,the driven shaft 23.

. the bag bundles 2.

' width of the which is being carried along by the and against the partition 21. The partition 21 serves to arrange said bundles in correct vertical alinement with the sheet and inasmuch .as the transversely cut edges of the sheets of wrapping material are only spaced apart the width of the'bundle to be wrapped. The rear end of the preceding bundle serves as a stop against which the forward end of the bundle being centered can be positioned. That is, the bags which are centered transversely of the machine by the'vertical partition 21 can be'=positioned longitudinally thereof also if the first package is correctly located relatively to .the eut edges of the wrapper merely by arranging said packages so that they. abut one against the other in passing along the machine.

We provide an adjustable arm 22 which is pivotally'supported diagonally over of the frame upon bearings which support The adjustablearm 22 carries a pivoted T-shaped head 24 uponits free end, and is pivotally mounted upon the I pin 25 and carries pulleys 26 and 26 upon its extremities. Said vertical shaft 23 also carries a pulley 26? which is arranged in horizontal alinement with said pulleys 26 and 26*, and a belt 27 is mounted about said pulleys 26, 26 and'26 and is driven by the rotation of the pulley 26*. The lineal speed of said belt is exactly the same as the speed of the main conveying belt "19 so that said belt 27 alsoacts as an auxiliary conveyingdevice for Said arm to its correct position by a handle 28 which is provided with looking devices and the head is also arranged so that the belt 27, in passing around the pulleys or less oblique angle thus bringing the bundles into alinement with the face of the vertical partition 21. The pulley 26 is arranged so that the spacing between the belt, in passing thereover, and the face of the vertical partition 21 corresponds exactly .to the bundle being wrapped. Said belt 27 thusis not only a guide for but also ;tends to straighten up'the bundle by compressing the bags or other elements in the bundle against. the face of the vertical par-- tition 21. Said belt 27 and the vertical partition 21 are of such widths as to be capable of guiding and alining the tallest bundles andthus when said bundles 2 pass beyond said device they are not only in vertical alinement with the sheet of wrapping paper, but are also straightened and in condition for being wrapped. Longitudinally arranged wires 29 are provided on the right hand side, looking forward, of the bed of the machine to hold down the several sheets of wrapping ma- I terial b so that they will .not be displaced relatively to the conveyor belt 19 by the placing of said-bundles-in position, said wires ex-' tending along the bed of said machine to a belt 19,

the bed 22 is adj listed- 26 and 26?, makes a more point at which the compressing devices not upon the bundles.

Pasting mechanism.

The paster roll 9 is alsarranged at the right hand side of the mac ward, and a plies a strip of paste 6 to one of the edges of the wrapping sheets. Paste is supplied to the pastor rol which bears on another roller 30*, so arranged in a paste container 30 that it is only partiallyimmersed therein. The paster roll 9 is carried bya sliding bracket 31 mounted upon laterally extending supporting rods 31 which permit the paster roll to be adjusted laterally. As before mentioned, said bracket is drawn laterally along said rods 31 by the cable 9 so that the position of the strip of paste b applied justed relatively to the position of the creasing and forming devices.

Compressing and folding devices.

The section of wrapping paper 12 at this point, is still flat and the bundles 2 of bags are carried upon the middle of the sheet of wrapping paper, the bundlesbeing movdd along by the belt 19. The bundles next move under a series of belts 32, 32 and 32 which are inclined towards the belt 19 in the direction of travel of the belt 19. 1

' The belts 32, 32 and 32 are mounted over pulleys 33, 33 and 33 and 0 er a common pulley 39. The pulleys 33,33 and 33 are mounted on an arm 37 hinged on a shaft 38 on which the pulley 39 is keyed, and the said ine, looking for- 9 by a roller 30 shaft 38 is journaled in the movable frame section '7, hereinafter described.

- Referring to Fig. 7, the supports 34, 35 and 36 respectively of the pulleys 33, 33 and 33 are adjustably fastened'in shackles 37 and are adjustable by means of set screws 34, 35-

and by this arrangement the peripheries of the three pulleys .are in a common plane tangential with the pulley 39.

By this construction, the pulleys 33, 33= and 33 are mounted closely together, and at the same time individual adjustmentsof each of the belts 32,32 and 32 is provided The arm 37 is adjustable relatively to the upper frame section 7 hereinafter described by means of an elevating screw 43 and a hand wheel 42, which bears against the top of the arm 37, by which it is raised or lowered by rotating the hand wheel 42.

. A bridge member 44, Fig. 12, is fixed to the arm 37 by downwardly extending supports the place of one wide belt, we eliminate the tendency of the top bag of a bundle of sticking to the belt, and thus becoming torn against the rearward edge of the bridge member 44.

Just before the bundles are carried under the belts 32,32 and 32*, we provide upright parallel curved wires 47 and 47 The wire or guide 47 is fixed to a plate bolted to the supports for the belt 19 hereinafter more fully described, and the wire 47 a is fixed to a plate bolted to a member 47 on the other side of the belt, which is mounted for lateral movement on transverse screws 89 and 90 hereinafter described. I

Thus lateral adjustment is provided for the curved wires 47 and 47 whereby the ends of the wrapper of any size bundle may be lifted and folded along the two center creases on each side of the bag bundle.

After the bag bundles are carried under the belts 32, 32 and 32 and compressed, they pass under a bridge section 56 which is supported from the frame section 7 in a horizontal plane tangential with the pulley 39 so that the bag bundles are held compressed thereunder. The adjacent ends of the bridge member 44 and the bridge section 56 are connected (Fig. 12) by a thin flexible member 44 provided with extensions of the grooves 44 in which the belts 32, 32 and 32 move and provides a limited angular movement be tween them to allow for the relative adjustment of the oneto the other.

The bridge section 56 is provided with a forwardly extending plate 50 bolted thereto, which is tapered at its other end as at 50". The plate '50 is exchangeable for others of different widths, to conform to the width of the bundle being wrapped.

Adjacent the point of the bag bundles are carried, under compression, under the plate 50', are provided two folding plates 94 and 49, on the right and left sides of the belt 19 respectively, the latter folding plate being arranged in advance of the former.

The folding plate 94 is suspended from a longitudinal member 94 which is slidably mounted for lateral movement on a transverse horizontal bar,98 supported from the frame section 7, at each end by angles 98", and for vertical movement with the said frame sec:

tion on parallel upright shafts 94, so that the folding plate 94 is adapted for both vertical and lateral adjustment relative to the width and height of the bundle by means hereinafter described. 7

The folding plate 49 on the right hand side is suspended from a parallel horizontal member 97, also, mounted on the vertical bar 98 which is adapted for vertical movement w. ith the frame section 7 but is held in fixed alignment with the wall 21.

The folding plates 94 and 49 are so arranged relatively to the plate 50, that as the bundles are carried under the said plate on the applied, as before described, down on the 1 former. 7

By this construction and arrangement the wrappers are losely folded and pasted around the bag bundles'which are now-under compression, so that when the bundles are released from the said compression, at the end of the machine, the wrappers will hold the bundle securely and compactly.

The bridge section 56 extends from the pulley. 39 to a pulley 54 upon which an endless belt 55 is mounted and the bag bundles pass out from under the folding plate 94 and the folding plate 49 and under the endless belt 55.

The endless belt 55 ismounted over roll-- crs 54 and 61 which are mounted on the upper frame section 7 and the portion of the belt which bears on the bag bundles is held evenly along its entire surface against the bag bundles by rollers 57, mounted on a bridge 57 which is fastened to the frame section 7 by downwardly extending supports 57.

The belt 55 serves to hold the bag bundles compressed and to press the pasted portion of the wrapper down on the other end of the folded wrapper.

An electricheating element 59 is provided above and adjacent the belt 55 and arranged so as to heat the pasted seam of the wrapper I and thus hasten the drying of the pasted scam, in order that the bag bundle when discharged from the machine will notbreak open. I The bag bundles are then carried continuously between the belts 19 and 55 to the end of the machine when they are discharged onto any suitable platform and the bag bundles, when released from the compression ofthe said belts expand and tighten the wrapper so that a solid and firm bundle is ready for distribution. v

The upper frame section 7 is supported by four threaded screws, 58 arranged in pairs at each side of the machine. Said screws are rotatably mounted in the frame 1 and engage threaded bushings 58 carried by the upper a turning tool 58 and thus by rotating said driven at exactly the same lineal speed as.

- which are connected by a chain 96.

screw all of said screws will be turned in unison so as to lift the frame 7 uniformly at each of its four corners.

The pulley 61 is mounted on a transverse shaft 62 which is supported on each end in journals 62 in which screws 62.are rotatably mounted. The screws are threaded into bosses 63 fastened to the upper frame section 7. By this construction the tension 0 the belt may be adjusted by rotating the screw 62.

We preferably provide two vertically arranged belts 64 at each side of the belt 19 at a point between the pulleys 39 and 54 at which point'the lateral ends of the sheets of wrapping paper are being enfolded about the bundles of bags. Said belts are-also the belt 19.

As is shownin Fig. 9, the driven vertically I arranged belts 64 may be moved towards and from each other to accommodate bundles ofbags of different widths. This adjustment is provided by four threaded screws 89, 89 90 and 90 which extend transversely of the machine and engage threaded nut-like portions 93 on the vertical shafts 94 on which the cross member 94- is also journaled. Said screw 89 is provided with an adjusting handle 91 by which said screw can be rotated. Said screws 89, 89, 90 and 90 are provided with sprockets 89",89, 90 and 90, respectively, Thus when the screw 89 is turned by the handle 91 all of said screws are turned simultaneously. so that the said vertical shafts 94 are moved either towards or from the similar fixed vertical supports 97, as shown in this figure.

Said vertical shafts 94 and supports 97 are slidably held at their upper ends by transverse shafts 98.

One of said vertical shafts 94 carries di- 9 rectly the relatively movable pulleys 100 and 101 previously referred to about which the cables 5*" and 5, respectively, are mounted.

Power is provided for the machine through a shaft 65. Outboard pulleys 66 and 67 are provided on said shaft, one being-aloose' pulley and the other a tight pulley. Said shaft 65'is connected to a shaft 68 by intermeshing gears 69 and 70 carried by said shafts 65 and 68, respectively. Power is transmitted from shaft 68 to and 73 on said shaft 68 and 71, respectively. Said shaft 71 carries puiicy 74 about which the belt 19 passes. Power is transmitted through a chain 75 to the shaft 18 which drives the cut-off knife, which is mounted about a sprocket 76 fastened over the shaft 65 and to the driven gear in the speed change device for the cut-off knife as shown in Fig. 2.

The driven pulley 54 about which the belt 55 is mounted is driven by a chain 77 which shaft 71 by gears 72 I passes over a sprocket fixed to the shaft 65 and over a sprocket fastened to the shaft 78-011 which said pulley 54 is fixed. A sprocket 80 is also fixed to the shaft 78 of the pulley 54 and a chain 40 is mounted over said sprocket 80 and over a sprocket 41 on the shaft 38, on which the pulley 39 also is fixed. Said chain 40 thus drives said pulley 39 and therewith f the belts 32, 32 and 32 mounted thereover.

(See Fig. 3 A chain 84 is mounted over a driven sprocket 85 and asprocket 86 which is fixed to the shaft 87 on which the pulley 88 for the belt 19 is mounted and said chain 84 also drives the rolls 10 and 10 11 and 11 which/are connected thereto bygears 10* and 10, 11 and 11, respectively. All of the said rolls are driven to feed the sheet of wrapping paper I) therethro'ugh.

We claim:

1. In a bundle wrapping machine, in combination with a traveling'carrier adapted to carry a wrapping sheet supporting a bundle, adjustable means for forming relatively spaced folding creases in said wrapping sheet, correspondingly adjustable means for folding the lateral ends of said sheet'along said creases about the sides and the top of the bundle carried by said carrier, and means connected to said creasing means and said folding means operable to position them simultaneously relatively to the cross section of the bundle to be wrapped.

- 2. In a bundle Wrapping machine, in combination with a traveling carrier adapted to carry a wrapping sheet supporting a bundle,

and adjustable means for forming relatively spaced folding creases in said wrapping sheet, correspondingly adjustable means for folding the lateral ends of said sheet along said creases about the sides and the top of the bundle carried by said carrier and means for applying adhesive to the extremity of one of the overlapped ends of the wrapping sheet, and means connected-to said creaser means, said folding means, and said adhesive-applying means operable to position these devices simultaneously relatively tothe cross section of the bundle to be wrapped.

3. In a bundle wrapping machine, a traveling carrier adapted to carry a wrapping sheet supporting abundle, a fixed alining element located on one side of said carrier, a companion alining element located on the opposite side of the carrier, and operating to engage and move the bundle against said fixed alining element.

4. In a bundle wrapping machine, a traveling carrier adapted to carry a wrapping sheet supporting a bundle, a fixed alining element located on one side of said carrier, an

adjustable companion alining element located a on the opposite side of the carrier, and opersaid fixed alining element.

5. In a bundle wrapping machine, a traveling carrieradapted to carry a wrapping sheet supporting a bundle, a fixed alining element located on one side of said carrier, a companion alining element located on the opposite side of the carrier, and operating to engage and move the bundle againstsaid fixed alining element, abridge section located in the middle of the machine, above and parallel with said carrier, and spaced from the latter relatively to a predetermined height of the bundle carried thereby and means for compressing the bundle carried by said carrier tothe height permitting the bundle to'pass under said bridge section.

6. In a bundle wrappmg machlne, a travelmg carrier adapted to-carry a Wrapping sheet supporting a bundle, a fixed alining element located on one side of said carrier, a companion alining element located on the opposite side of the carrier, and operatin toengage and move the bundle against said fixed alining element, a bridge section located in the middle of the machine, above and parallel with said carrier", and spaced from the latter relatively to a predetermined height of the bundle carried thereby, means for compress- 7 In a bundle wrapping machine, a traveling carrier adapted to carry a Wrapping sheet'supporting a bundle, a. bridge section located in the middle of the machine, above and 'parallelwith said carrier, and spaced from the latter relatively to a predetermined height of the bundle carried thereby, and means for compressing the bundle carried by said carrier to the-height permitting the bundle to pass'under saidbridge section,

8. In a bundle wrapping machine, a traveling carrier adapted to carry a wrapping sheet supporting a bundle, abridge section located in the middle of the machine, above and parallel with said carrier, and spaced fromthe latter relatively to a predetermined height of the bundle carried thereby, and

means for compressing the bundle carried by said carrier to the height permitting the bundle to pass under said bridge section, and means in co-operation with said carrier functioning first to lift the lateral ends of the wrapping sheet against the sides of the bundle, and then folding the extremities of said ends one over the other over said bridgesection.

9. In a bundle wrapping machine, a traveling carrier adapted to carry a Wrapping sheet supporting a bundle, a bridge section located in the iniddle of the machine, above and. parallel with said carrier, and spaced by said carrier to the heig t permitting the bundle to pass under said bridge section, means in co-operation with said carrier func tioning first to lift the lateral ends of the wrapping sheet against the sides of the bundle, and then folding the extremities of said ends one over the other over said bridge section, means for applying adhesive to one of said extremities and means for compressing said extremities together over said bridge section. q I

10. In a bundle wrapping machine, a traveling carrier adapted to carry a wrapping sheet supporting a bundle, a bridge section located'in the middle of the machine, above and parallel with said carrier, and spaced from the latter relatively to a predetermined height of the bundle carried thereby; means for compressing the bundle carried by said carrier to the height permitting the bundlesto pass under the said bridge section, means in coope ration with the carrier functioning first to lift the lateral ends of the wrapping sheet against the sides of the bundle, and then folding the extremities of said ends one over the other over said bridge section, means for applying adhesive to one of said ex-. 1

tremities and means for com ressing said extremities together over said ridge section and applying heat thereto.

11. In a bundle wrapping machine, a traveling carrier adapted to carry a wrapping i sheetsupporting a bundle, a bridge section located in the middle of the machine, above and parallel with said carrier, and spaced from the latter relatively to a predetermined height of the bundle carried thereby, meansfor compressing the bundle carried by said carrier to the height permitting the bundle to pass under'said bridge section, means in co-operation with said carrier functioning first to lift the lateral ends of the wrapping sheet against the sides of the bundle, and then folding the extremities of said ends one over the other over said bridge section, and means co-operating with said carrier and located adjacent to and forward of said bridge section, adapted to restrain said bundle compressed as received, and while moved from said bridge section.

12. In a bundle wrapping machine, a travel- I ing carrier adapted to carry a Wrapping sheet supporting a bundle, a bridge section located in the middle of the machine, above andparallel Wit-h said carrier, and spaced from the latter-relatively to a predetermined height of the bundle carriedthereby, means for compressing the bundle carried by said carrier to the height permitting thehundle to pass under said bridgesection, means in co-operation with saidcarrier functioning first to lift the lateral ends of the wrappingsheet against the received said bridge section,

panion alining element sides of the bundle, and then folding the extremities of said ends one over the other over and a traveling belt located at the far end of said carrier, above and parallel withthe latter, adapted to bear on the top of the bundle carried by the carrier as from under said bridge section, cooperating with said carrier in etfectin the further movement of the bundle throug the machine, and holding the bundle in its said compressed state during such further movement.

13. In a bundle wrapping machine, a traveling carrier adapted to carry a wrapping sheet supporting a bundle, a fixed alining element located on one side of said carrier, a comlocated on the opposite side of the carrier, and operating to engage and move'the bundle against said fixed aligning element, a bridge the middle of the machine, above and parallel with said carrier, and spaced from the latter relatively to a predetermined height of the bundle carried thereby, means for compressing the bundle carried by said carrier to the height permitting the bundle to pass under said bridge section, means in co-operation with said carrier functioning first tolift the latralends of the wrapping sheet against the sides of the bundle,-and then folding the excompressible material, said machine provided with a traveling carrier for the bundle to be wrapped and the wrapper thereof, means for compressing the bundle to a lesser height than that which it tends normally to assume, means for wrapping and securing the wrapper loosely about the bundle while under compression thereby to hold the bundle in a firm package when released from said compressing means.

.16. In a machine for wrapping bundles of compressible material, said'machine provided with a traveling carrier for the bundle to be wrapped and the wrapper thereof, means for compressing the bundle to a lesser height than that'which it tends normally to assume, means for wrapping a band-like wrapper loosely about the bundle while still under such compression, thereby to hold the bundle in a firm pacliage when released from said compressing means, means for pasting the ends of the wrapper together whilestill under said compression, and means for effecting the drying o the pasted seam of the wrapper before the bundle is released from said compression.

17. In a machine for wrapping bundles of compressible material, a main frame, a travcling. carrier mounted therein adapted to carry a wrapping sheetsupporting a bundle, a supplemental frame mounted vertically ad tremities of said ends one-over the other over ll b 11 sa d main frame and means carsaid bridge section, means co-operating with said carrier and located adjacent to and forward of said bridge section, adapted to restrain said bundle compressed as received, and

while-moved from said bridge section.

14. In a'bundle wrapping machine, a traveling carrier adapted to carrya wrapping sheet supporting a bundle, a fixed alining element located on one sideof said carrier,a companion alining element located on the opposite side of the carrier, and operating to engage and move the bundle against said fixed alining'element, a bridge section located in the middle of the machine, above and parallel with said carrier, and spaced from the latter relatively to a predetermined height of the bundle carried thereby; means for compressing the bundle carried by said carrier to the height permitting the bundle'to pass under said bridge section, means in co-operation with said carrier functioning first to lift the lateral ends of the wrapping sheet against, the sides of'the b'un dle. and then folding the extremities of said.

.' ends one over theother over said bridge section, and a traveling belt located at the far end of said carrier, above and parallel with, the latter, adapted to bear on the top 'of the bundle carried by the carrier as received from under said bridge section, co-operating with said carrier in effecting the further movement of thefbundle through the machine, and holding the bundle in its said compressed state during such further movement.

15. In a machine for wrapping bundles of rled by said supplemental frame for compressing said bundle to a lesser height than that which it tends normally to assume.

18. In a bundle wrapping machine, a main frame, .a traveling carrier mounted therein adapted to carry a wrapping sheet supportmg a vertically pivotal about its forward end and means carried by said supplemental frame for combundle, a supplemental frame mounted ad ustable on said main frame and pressing said bundle to a predetermined 19. In a machine for wrapping bundles of compressible material, a traveling carriera apte'd to carry a wrapping sheet supportng a bundle, means co-operating with said carrier for compressing said bundle to a predetermined height, such meanscomprising an endless belt running in the same dlreotion as said carrier, ually increased pressure to the bundle passing thereunder. V

20. In a machine for wrapping bundles of compressible material, a traveling carrier adapted to carry a wrapping sheet supporting a bundle, means co-operat-ing with said carrier for compressing said bundle to a predetermined height, such means comprising an endless belt running in the same direction as said carrier. the forward end of said belt being spaced above the carrier relatively to the height to which said bundle shall be compressed and the rear end of said belt being spaced a greater distance from said carrier.

said belt arranged to apply grad- 

